Electrical connection.



PATENTED JULY 5, 1904.

E. AVG. STREET. ELECTRICAL CONNECTION.

APPLICATION FILED JULY 15, 1903.

N0 MODEL.

Fig.1

CI in UNITED STATES Patented July 5, 19-34.

ia'rarir ERNEST AUGUSTE GEORGE STREET, OF COURBEVOIE,FRANCE, ASSIGNOR TO LA SOCIETE AN ONYME LE CARBON E, OF LEVriLLOiS-PERRE NEAR PARIS, FRANCE.

ELECTRICAL CONNEGTEQN.

SIREGIFICATION forming part of Letters Patent No.. 764,391, dated July 5, 1904.

Application filed July 15, 1903. Serial No. 165,678. (No modeh) To all whom it may concern:

. Be it known that I, ERNEST AUGUSTE GEORGE STREET, electrical engineer, a citizen of the Republic of France, residing at 54 Qiiai de 5 Courbevoie, Courbevoiefieine, in the French Republic, have invented certain new and useillLImprovements Relating to Electrical Connections, of which the following is a specification.

This invention relates to an improved mode of connecting electric conductors or conducting-wires to conducting-bodiessuch as carbon blocks, 'plates, or the likeapplicable for use in connection with electric machines, bat- 5 teries, electrodes, or similar apparatus, the object being to establish an intimate contact be: tween the conducting-body and the conductor. In applying the invention,by way of exam- -ple, to a'brush such as employed on dyi'i ind electric machines, in which ablock of carbon is provided with a bearing-plate adapted to receive the pressure of the spring, whereby the brush is maintained in contact with the v commutator, the invention comprises a par- 5 ticular method of attaching the said hearing or pressure-receiving plate to the carbon and a special arrangement whereby the conductor is locked or secured in the said carbon body. It will, however, be readily apparent that the said locking arrangement may be employed in other connections where a secure and inti'- mate locking and contact are required to be effected.

In order that the said invention may be clearly understood and readily carried into effeet, I- will now proceed to describe the same more fully ing drawings, in which- Figure 1 is a face view, Fig. 2 a plan, and I 4 Fig. 3 a longitudinal section, of a carbon block comprising a mass of carbon havinga conductor and a bearing-plate arranged according to the present invention, the section in Fig. 3 being taken alongthc line rr min Fig. 1. Fig. 4 is '45 ascction of the block, taken along the line in Fig. 2, the conductor being, however, removed. Fig. 5 is a longitudinal section of the bfbck, taken along the line a s in Fig. i.

tor c.

. channel a.

with reference tothe accompany The block a, plate, or the like, as the case or otherwise) with channels or passages a a arra'nged perpendicularly or atright angles to each other for the reception of the conduc- The upper part of the block is formed with a recess or countersunk portion (1 of which the sidesa are undercut or of dovetail shape in transverse section to accommodate the hearing or pressure receiving plate F), which is formed with beveled edges to fit the said recess a. The plate 6 is'forined with a central hole or perforation Z), which when the said plate is in position in the block corresponds or is in alinement with the aforesaid The terminations of the .channei a 'are expanded or splayed, as indicated at a (f, Fig; 5, for a purpose hereinafter explained.

' Assuming the bearing or pressure-receiving plate I; to be placed in position in the recess (2 and the end ofthe conductor 0 to have been untwisted, so as to separate the strands or wires c composing the same, the end of the conductor is inserted through the hole or perforation Z) in the plate 6 and through the coinciding channel or passage (4 in the bio ck.

The separated strands c of the conductor are.

then divided so that some are presented eachof the respective expanded or flared terminations (1 of the transverse channel or pas sage of, a screw or belt a, adapted to grip the ends of the wires 0',- heing then introduced into the said transverse channel. This screw or bolt may comprise screw, as shown, hay/1L e the usual beveled head, the and thereo'I' re mote from the head being adapted to receive a nut d of truncated cone or screw-head formation. By tightening the out on the screw or bolt the separated strands of the conductor may be firmly locked or secured against the expanded or flared extremities of the channel If. The several parts of the apparatus are thus firmly held together and in intimate contact with each other.

it will be readily understood that with a view increasing the intimacy of the contact upper part of the carbon block may be coated with copper or be mctalized. \Vith the same object and, further, to add to its solidity the various parts of the apparatus comprised in thehereinbefore-described method of connection may be subjected to a tin-soldering process.

As an example of the modev of carrying out the invention the preceding description has oeen directed to a carbon block comprising a conductor and a bearing or pressure-receiving plate; but it will be readily understood that the means of locking the conductor in the said block is equally applicable where a bearing-plate is not employed and in connection with blocks or plates for batteries, electrodes, or similar apparatus. In either of the cases last referred to it would not be necessary to recess or undercut the carbon or conductingbody for the reception of the bearing-plate, the intimate contact between the conductor and the conducting-body being established entirely by passing the end of the conductor through the channels or passages and by means of the screw and nut, for example, locking the separated strands of the conductor against ,the flared or expanded extremities of the transverse channel, the intimacy being increased, if desired, by subjecting the apparatus to a tin-soldering process.

\Yhat I claim, and desire to secure by Letters Patent of the United States, is-

I. In a carbon brush, a conductor and aconductingbody, channels formed in the said body and clamping means applied to the opened-out strands of the said conductor at the channel extremities.

2. In a carbon brush, a conducting-body, channels formed in the said conducting body, a conductor connected with the conductingbody by passing the conductor into and through the aforesaid channels and means for clamping the opened-out strands of the said conductor in the channel extremities.

' 3. In a carbon brush, a conducting-body,

channels formed in thesaid conducting-body, a subdivided and bifurcated conductor, and means for locking the opened-out strands of the bifurcated' ends of the said conductor at the points of egress thereof from the connecting-body. v

4:. In a carbon brush, a conducting-body, channels or passages formed in the said cond noting-body and arranged at an angle to each other, a subdivided and bifurcated conductor and means for locking the opened-out strands of the said subdivided and bifurcated conductor ends at the egress of the said channels.

, 5. A conducting body, a longitudinal channel therein, a transverse channel intersecting the said longitudinal channel, a conductor in said longitudinal channel and having its subdivided and bifurcated ends in the said transverse channels and a screw and nut at the respective extremities of the transverse channel.

6. A conductor, a conducting-body, alon- Iposes specified. I

14$ A co nducting-bodyformed with a longitudinalchanncl therein, transverse channels extending laterally on each side of the said longitudinal channel-{expanded or splayed portions at the extremities of the transverse channels and means for locking the separated strands of the-conductor in the said expanded or splayed portions.

7. In a carbon brush, a conducting-body,

a longitudinal channel, a transverse channel branching therefrom on each side, expanded or splayed portions at the extremities of the said transverse branch channels and a' bolt and nut adapted to'lock the separated trands of the bifurcated conductor in the sai expanded or splayed extremities. 1

8. In a carbon brush, the combination of a stranded conductor, a conducting-body, 3. Iongitudinal channel, lateral channels branching from the said longitudinal channel, expanded or splayed extremities at the egress ends of the said lateral channels and a locking bolt and nut adapted to lock the wire strands at the I said extremities of the lateral channels.

9. In a carbon brush, the combination of a stranded conductor, a conducting-body, a longitudinal channel, a transverse channel branching from each side thereof, a recess in the said conducting-body and a bearing or pressurereceiving plate, the recess of the plate having beveled or undercut edges for effecting a good oint.

10. In a carbon brush, the combination of channels in said body, anundercut or dovetail recess in the said body, a hearing or pressure-receiving plate and beveled edges on the said plate.

11. In a carbon brush, the combination of a stranded conductor, a conducting-body, a longitudinal channel, right angled branch channels, an undercut or dovetail recess in the said body, a perforated hearing or pressure-receivin g plate and beveled edges adapted to afiord a hold for the said plate in the said undercut or dovetail recess.

12. A conducting-body formed with a longitudinal channel and a flared channel arranged transversely thereto, a beveled and perforated bearing-plate in the end of the said body and a bolt and nut adapted to lock the separated strandsof the conductor in the said flared transverse channel, substantially as' herein described for the purposes specified.

13. A conducting-body having a beveled bearing-plate and channels arranged at right angles to each other through which the cons ductor is passed and in which the separated strands of the latter are locked between the flared extremities of one of .the channels and a correspondingly-formed bolt and nut; the

parts being coated with metal or metalized, substantlally as herein described for the pur 'a conductor, a conducting-body, right-angled gitudina l' phannel and a flared channel ar- 13 ill.

ranged at an angle thereto, abeveled and perforated bearing-plate in the end of the said body and a bolt and 'nut adapted to look the separated strands of the conductor in the said flared; channel, substantially as herein described for the purposes specified.

15. A conducting-body having a beveled bearing-plate and channels arranged at angles to each other through which the conductor is passed and in which the separated strands of the latter are locked between the flared extremities of one of the channels and a correspondingly-formed bolt and nut; the parts being coated with metal or metalized; substantially as herein described for the purposes specified.

In testimonywvhereof I have hereunto set my hand, in presence of twe, subscribing witfnesses, this 26th day of June, 1903.

ERNEST AUGUSTE GEORGE STREET.

Witnesses: ENRIQUE SAER,

AUGUSTUS E. INGRAM. 

